辽宁省东部是山地、丘陵,西部地势较平缓。东部山地、丘陵是长白山的余脉,距海较近,从沿海向内地,地形有逐步升高的趋势,因此降水量较大,大部超过700毫米,有些地方高达1200毫米以上。但在过去东部山区由于山峦起伏,水源虽然丰富,水面却不多。解放以来,由于大力发展水利事业,大小水库星罗棋 Liaoning Province is the eastern mountains, hills, the western terrain is relatively flat. The eastern mountains and hills are the remnant of the Changbai Mountains. They are close to the sea. From the coast to the hinterland, the terrain is gradually increasing. As a result, the precipitation is large, mostly over 700 mm and in some places up to 1200 mm. However, in the past, mountainous areas in the eastern part of the mountains fluctuated due to the abundance of water sources, but there were not many water surfaces. Since the liberation, due to the vigorous development of water conservancy, large and small reservoir around